From d7ada51bddf26aeb7c313889ad11008a91a4808f Mon Sep 17 00:00:00 2001 From: Rasmus Villemoes Date: Thu, 25 Jun 2015 15:02:22 -0700 Subject: UPSTREAM: lib/string.c: introduce strreplace() Strings are sometimes sanitized by replacing a certain character (often '/') by another (often '!'). In a few places, this is done the same way Schlemiel the Painter would do it. Others are slightly smarter but still do multiple strchr() calls. Introduce strreplace() to do this using a single function call and a single pass over the string. One would expect the return value to be one of three things: void, s, or the number of replacements made. I chose the fourth, returning a pointer to the end of the string. This is more likely to be useful (for example allowing the caller to avoid a strlen call). BUG: 27175947 Signed-off-by: Rasmus Villemoes Cc: "Theodore Ts'o" Cc: Greg Kroah-Hartman Cc: Neil Brown Cc: Steven Rostedt Cc: Joe Perches Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Change-Id: I1ddb88534a189f2e78ae1b5b074c0662781c7665 --- include/linux/string.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/linux/string.h') diff --git a/include/linux/string.h b/include/linux/string.h index 3b42b3732..5aab1f795 100644 --- a/include/linux/string.h +++ b/include/linux/string.h @@ -114,6 +114,7 @@ extern int memcmp(const void *,const void *,__kernel_size_t); extern void * memchr(const void *,int,__kernel_size_t); #endif void *memchr_inv(const void *s, int c, size_t n); +char *strreplace(char *s, char old, char new); extern char *kstrdup(const char *s, gfp_t gfp); extern char *kstrndup(const char *s, size_t len, gfp_t gfp); -- cgit v1.2.3